#400F0A#400F0A

#400F0A is a dark, moderate red. Relative luminance 0.015; OKLCH L 25.3% C 0.077 H 29.3°. Best body text is #FFFFFF at 16.27:1 contrast (WCAG AA passes).

Color values

HEX	#400F0A
RGB	rgb(64, 15, 10)
HSL	hsl(6, 73%, 15%)
HSV	hsv(6, 84%, 25%)
CMYK	cmyk(0%, 76.6%, 84.4%, 74.9%)
CIE-LAB	lab(12.31, 23.43, 14.87)
CIE-LCH	lch(12.31, 27.75, 32.41°)
OKLab	oklab(25.3% 0.0673 0.0378)
OKLCH	oklch(25.3% 0.077 29.3)
XYZ	xyz(2.3402, 1.4539, 0.4445)
Luminance	0.0145 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#400F0A #0A3B40

analogous

#400A20 #400F0A #402A0A

triadic

#400F0A #0A400F #0F0A40

tetradic

#400F0A #20400A #0A3B40 #2A0A40

square

#400F0A #20400A #0A3B40 #2A0A40

split-complementary

#400F0A #0A402A #0A2040

monochromatic

#1A0604 #1A0604 #400F0A #751B12 #AA281B

Accessibility & contrast

On white

16.27

#400F0A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#400F0A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #400F0A

16.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##400F0A	#FFFFFF	#000000	##FFFFFF
##400F0A	1.00	16.27	1.29	16.27
#FFFFFF	16.27	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D1909

Deuteranopia (green-blind)

#292408

Tritanopia (blue-blind)

#47030E

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #400f0a;
/* rgb */ color: rgb(64, 15, 10);
/* oklch */ color: oklch(25.3% 0.077 29.3);

Tailwind

colors: {
  custom: {
    50: '#7a514b',
    500: '#400f0a',
    950: '#000000',
  },
}

SCSS

$custom: #400f0a;
$custom-light: #7a514b;
$custom-dark: #000000;

JSON

{
  "hex": "#400f0a",
  "rgb": {
    "r": 64,
    "g": 15,
    "b": 10
  },
  "hsl": {
    "h": 5.556,
    "s": 72.973,
    "l": 14.51
  },
  "oklch": {
    "l": 0.25304,
    "c": 0.07717,
    "h": 29.3
  },
  "luminance": 0.01454
}

Semantic roles & 50–950 ramp

primary

#400F0A

secondary

#29757D

accent

#DFF038

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #400F0A

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →